Rolling mill cooling liquid injection method

Abstract

The invention provides a rolling mill cooling liquid injection method. The method is characterized in that two shell-shaped cooling liquid injection systems, namely a left injection system and a right injection system, are symmetrically arranged about a rolling mill roll system; a strip is taken to sequentially penetrate through the left injection system, the rolling mill roll system and the right injection system along a rolling mill unit operating line; the shell-shaped cooling liquid injection systems are started; the shell-shaped cooling liquid injection systems inject cooling liquid to a to-be-cooled area; and the to-be-cooled area at least comprises the contact position of the strip and a working roller and the contact position of the working roller and an adjacent roller. According to the method, the arrangement problem of a cooling liquid injection system in a narrow space is solved through the shell-shaped arrangement, the injection distance is greatly reduced, the injection pressure of cooling liquid is greatly improved through multiple times of pressurization, and the small injection distance and the large injection pressure enable the shell-shaped cooling liquid injection systems to thoroughly solve many problems existing in the existing cooling liquid injection system.

Description

technical field [0001] The invention belongs to the field of strip rolling, and in particular relates to a rolling mill coolant injection method. Background technique [0002] With the wide application of strips in the fields of national defense, military industry, home appliances and microelectronics, especially the promotion of high-tech electronic products such as curved screens, end users of products require strips with extremely thin thickness, high strength and excellent shape stringent requirements. At present, there is a huge domestic demand for such ultra-precision ultra-thin strips (high-precision, high-stability strips with a thickness less than 0.1mm), but most of the products are imported. The traditional rolling process and its equipment can be used for the production of low-end strips, but they cannot meet the requirements of the ultra-precision and ultra-thin strip rolling process, especially the coolant injection system of the rolling mill cannot take away ...

AI Technical Summary

Problems solved by technology

However, during the rolling process of ultra-precision ultra-thin strips, a large amount of deformation heat will be generated. If this heat is not taken away by the coolant or cooled in time, it will easily lead to a decrease in the surface quality of the strip or burns on the roll surface.

However, due to the narrow space inside the rolling mill, the layout of the coolant injection system is very limited

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